Supply a Color Bar pattern with 100% white signal to an External Input. Select the Color Bars as the source for both the main and sub pictures. Connect a scope to TPY (Main Luminance) & TPSY (Sub Luminance). Enter the Alignment Mode (MENU-2-4-5-7) Select the SMTX function (AUDIO button). Select adjust item #14 YDRS (VIDEO button). Set the data so the waveform at TPSY equals TPY. (ADJUST buttons). Press �ENTER� to save data. Press �MENU� twice to exit the service mode.
PWB-SIGNAL (Partial)
TPSY
TPY
[Video Circuit] 3. Sub Picture Offset
Measuring Instrument Test Point Ext. Trigger Measuring Range Input Signal Input Terminal -----------------Full White Raster External Input
Purpose: Symptom:
To match sub picture white to main picture white Sub picture white differs from white in the main picture.
Supply a full white raster signal to an External Input. Select the White raster as the source for both the main and sub pictures. Use the PIP/POP buttion to select the Single PIP mode. Enter the Alignment Mode (MENU-2-4-5-7) Select the AD9883A function (AUDIO button). Select item #12 ROFF and #14 BOFF (VIDEO button). Set the data fore items #12 and #14 so the sub picture white is close to that in the main picture. (ADJUST buttons). 7. Press �ENTER� to save data. 8. Press �MENU� twice to exit the service mode.
